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Date: Mon, 9 Jul 2012 04:57:05 +0400
From: Solar Designer <>
Subject: Re: Rotate and bitselect investigation

On Mon, Jul 09, 2012 at 01:24:14AM +0530, Sayantan Datta wrote:
> I was able to squeeze in another bitselect optimization in the kernel
> resulting in 2% performance jump.

Where did you put that other bitselect()?

This is not in magnum-jumbo yet.  Can you commit your latest stuff,

> std2048@...l:~/bin/run$ ./john -te -fo=mscash2-opencl -pla=1
> OpenCL platform 1: AMD Accelerated Parallel Processing, 2 device(s).
> Using device 0: Tahiti
> Optimal Work Group Size:128
> Kernel Execution Speed (Higher is better):1.581469
> Benchmarking: M$ Cache Hash 2 (DCC2) PBKDF2-HMAC-SHA-1 [OpenCL]... DONE
> Raw:    103819 c/s real, 103819 c/s virtual

Looks good.


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